Consumers should immediately stop using the affected instruments and return them to Extech Instruments' office at FLIR Systems Canada for a free replacement. For more information, consumers may contact Extech Instruments by telephone at 1-855-239-8324 between 8:30 AM and 5 PM EST Monday through Friday, by email at recall@extech.com or visit the Extech website . Consumers may also view the release on the [NJS_FILE:b50b5b50-9925-4f5b-901a-439953cbbfe3:7a9e53aa-0e85-447d-8294-bc1801989377]. Date modified: 2010-12-16